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Revision 1.81 - (hide annotations) (download)
Sun Jan 10 09:26:09 2010 UTC (4 years, 8 months ago) by robbat2
Branch: MAIN
Changes since 1.80: +2 -3 lines
Bug #286145: More flexible logic for OUTPUT_DIR defaults.

1 vapier 1.37 # Copyright 1999-2006 Gentoo Foundation
2 johnm 1.1 # Distributed under the terms of the GNU General Public License v2
3 robbat2 1.81 # $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.80 2010/01/10 09:25:12 robbat2 Exp $
4 johnm 1.1 #
5 phreak 1.52 # Original author: John Mylchreest <johnm@gentoo.org>
6     # Maintainer: kernel-misc@gentoo.org
7 johnm 1.10 #
8     # Please direct your bugs to the current eclass maintainer :)
9    
10 dsd 1.56 # @ECLASS: linux-info.eclass
11     # @MAINTAINER:
12     # kernel-misc@gentoo.org
13     # @BLURB: eclass used for accessing kernel related information
14     # @DESCRIPTION:
15     # This eclass is used as a central eclass for accessing kernel
16 robbat2 1.62 # related information for source or binary already installed.
17 dsd 1.56 # It is vital for linux-mod.eclass to function correctly, and is split
18     # out so that any ebuild behaviour "templates" are abstracted out
19     # using additional eclasses.
20 robbat2 1.62 #
21     # "kernel config" in this file means:
22     # The .config of the currently installed sources is used as the first
23     # preference, with a fall-back to bundled config (/proc/config.gz) if available.
24 dsd 1.56
25 johnm 1.10 # A Couple of env vars are available to effect usage of this eclass
26     # These are as follows:
27 dsd 1.56
28     # @ECLASS-VARIABLE: KERNEL_DIR
29     # @DESCRIPTION:
30     # A string containing the directory of the target kernel sources. The default value is
31     # "/usr/src/linux"
32    
33     # @ECLASS-VARIABLE: CONFIG_CHECK
34     # @DESCRIPTION:
35     # A string containing a list of .config options to check for before
36     # proceeding with the install.
37     #
38     # e.g.: CONFIG_CHECK="MTRR"
39     #
40     # You can also check that an option doesn't exist by
41     # prepending it with an exclamation mark (!).
42     #
43     # e.g.: CONFIG_CHECK="!MTRR"
44     #
45 robbat2 1.62 # To simply warn about a missing option, prepend a '~'.
46     # It may be combined with '!'.
47     #
48     # In general, most checks should be non-fatal. The only time fatal checks should
49     # be used is for building kernel modules or cases that a compile will fail
50     # without the option.
51     #
52     # This is to allow usage of binary kernels, and minimal systems without kernel
53     # sources.
54 dsd 1.56
55     # @ECLASS-VARIABLE: ERROR_<CFG>
56     # @DESCRIPTION:
57     # A string containing the error message to display when the check against CONFIG_CHECK
58     # fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
59 swegener 1.29 #
60 dsd 1.56 # e.g.: ERROR_MTRR="MTRR exists in the .config but shouldn't!!"
61    
62     # @ECLASS-VARIABLE: KBUILD_OUTPUT
63     # @DESCRIPTION:
64     # A string passed on commandline, or set from the kernel makefile. It contains the directory
65     # which is to be used as the kernel object directory.
66 johnm 1.10
67     # There are also a couple of variables which are set by this, and shouldn't be
68     # set by hand. These are as follows:
69 dsd 1.56
70     # @ECLASS-VARIABLE: KV_FULL
71     # @DESCRIPTION:
72     # A read-only variable. It's a string containing the full kernel version. ie: 2.6.9-gentoo-johnm-r1
73    
74     # @ECLASS-VARIABLE: KV_MAJOR
75     # @DESCRIPTION:
76     # A read-only variable. It's an integer containing the kernel major version. ie: 2
77    
78     # @ECLASS-VARIABLE: KV_MINOR
79     # @DESCRIPTION:
80     # A read-only variable. It's an integer containing the kernel minor version. ie: 6
81    
82     # @ECLASS-VARIABLE: KV_PATCH
83     # @DESCRIPTION:
84     # A read-only variable. It's an integer containing the kernel patch version. ie: 9
85    
86     # @ECLASS-VARIABLE: KV_EXTRA
87     # @DESCRIPTION:
88     # A read-only variable. It's a string containing the kernel EXTRAVERSION. ie: -gentoo
89    
90     # @ECLASS-VARIABLE: KV_LOCAL
91     # @DESCRIPTION:
92     # A read-only variable. It's a string containing the kernel LOCALVERSION concatenation. ie: -johnm
93    
94     # @ECLASS-VARIABLE: KV_DIR
95     # @DESCRIPTION:
96     # A read-only variable. It's a string containing the kernel source directory, will be null if
97     # KERNEL_DIR is invalid.
98    
99     # @ECLASS-VARIABLE: KV_OUT_DIR
100     # @DESCRIPTION:
101     # A read-only variable. It's a string containing the kernel object directory, will be KV_DIR unless
102     # KBUILD_OUTPUT is used. This should be used for referencing .config.
103 johnm 1.10
104 johnm 1.21 # And to ensure all the weirdness with crosscompile
105 johnm 1.23 inherit toolchain-funcs versionator
106 johnm 1.1
107 johnm 1.8 EXPORT_FUNCTIONS pkg_setup
108 johnm 1.1
109 robbat2 1.65 DEPEND=""
110     RDEPEND=""
111    
112 johnm 1.1 # Overwritable environment Var's
113     # ---------------------------------------
114 johnm 1.21 KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
115 johnm 1.1
116 johnm 1.7
117 johnm 1.16 # Bug fixes
118     # fix to bug #75034
119     case ${ARCH} in
120 swegener 1.29 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
121     ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
122 johnm 1.16 esac
123    
124 vapier 1.51 # @FUNCTION: set_arch_to_kernel
125     # @DESCRIPTION:
126     # Set the env ARCH to match what the kernel expects.
127     set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
128     # @FUNCTION: set_arch_to_portage
129     # @DESCRIPTION:
130     # Set the env ARCH to match what portage expects.
131     set_arch_to_portage() { export ARCH=$(tc-arch); }
132 johnm 1.11
133     # qeinfo "Message"
134     # -------------------
135 johnm 1.21 # qeinfo is a quiet einfo call when EBUILD_PHASE
136 johnm 1.11 # should not have visible output.
137 johnm 1.21 qout() {
138     local outputmsg type
139     type=${1}
140     shift
141     outputmsg="${@}"
142 wolf31o2 1.26 case "${EBUILD_PHASE}" in
143     depend) unset outputmsg;;
144     clean) unset outputmsg;;
145     preinst) unset outputmsg;;
146     esac
147     [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
148 johnm 1.11 }
149    
150 johnm 1.21 qeinfo() { qout einfo "${@}" ; }
151     qeerror() { qout eerror "${@}" ; }
152 johnm 1.11
153 johnm 1.1 # File Functions
154     # ---------------------------------------
155    
156 dsd 1.56 # @FUNCTION: getfilevar
157     # @USAGE: variable configfile
158     # @RETURN: the value of the variable
159     # @DESCRIPTION:
160 robbat2 1.61 # It detects the value of the variable defined in the file configfile. This is
161     # done by including the configfile, and printing the variable with Make.
162     # It WILL break if your makefile has missing dependencies!
163 johnm 1.1 getfilevar() {
164 dsd 1.57 local ERROR basefname basedname myARCH="${ARCH}"
165 johnm 1.1 ERROR=0
166 johnm 1.16
167 johnm 1.1 [ -z "${1}" ] && ERROR=1
168     [ ! -f "${2}" ] && ERROR=1
169    
170     if [ "${ERROR}" = 1 ]
171     then
172 johnm 1.6 echo -e "\n"
173 johnm 1.1 eerror "getfilevar requires 2 variables, with the second a valid file."
174     eerror " getfilevar <VARIABLE> <CONFIGFILE>"
175     else
176 johnm 1.34 basefname="$(basename ${2})"
177     basedname="$(dirname ${2})"
178 johnm 1.6 unset ARCH
179 johnm 1.21
180 johnm 1.42 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
181 dsd 1.57 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
182 johnm 1.21
183     ARCH=${myARCH}
184 johnm 1.1 fi
185     }
186    
187 robbat2 1.61 # @FUNCTION: getfilevar_noexec
188     # @USAGE: variable configfile
189     # @RETURN: the value of the variable
190     # @DESCRIPTION:
191     # It detects the value of the variable defined in the file configfile.
192     # This is done with sed matching an expression only. If the variable is defined,
193     # you will run into problems. See getfilevar for those cases.
194     getfilevar_noexec() {
195 robbat2 1.62 local ERROR basefname basedname mycat myARCH="${ARCH}"
196 robbat2 1.61 ERROR=0
197 robbat2 1.62 mycat='cat'
198 robbat2 1.61
199     [ -z "${1}" ] && ERROR=1
200     [ ! -f "${2}" ] && ERROR=1
201 robbat2 1.64 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
202 robbat2 1.61
203     if [ "${ERROR}" = 1 ]
204     then
205     echo -e "\n"
206     eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
207     eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
208     else
209 robbat2 1.62 ${mycat} "${2}" | \
210 robbat2 1.61 sed -n \
211     -e "/^[[:space:]]*${1}[[:space:]]*=[[:space:]]*\(.*\)\$/{
212     s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
213     s,[[:space:]]*\$,,g ;
214     p
215 robbat2 1.62 }"
216 robbat2 1.61 fi
217     }
218    
219 robbat2 1.75 # @PRIVATE-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
220     # @DESCRIPTION:
221     # This is only set if one of the linux_config_*exists functions has been called.
222     # We use it for a QA warning that the check for a config has not been performed,
223     # as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
224     # config is available at all.
225     _LINUX_CONFIG_EXISTS_DONE=
226    
227     linux_config_qa_check() {
228 robbat2 1.76 local f="$1"
229 robbat2 1.75 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
230 robbat2 1.76 ewarn "QA: You called $f before any linux_config_exists!"
231     ewarn "QA: The return value of $f will NOT gaurenteed later!"
232 robbat2 1.75 fi
233     }
234 dsd 1.53
235 robbat2 1.62 # @FUNCTION: linux_config_src_exists
236     # @RETURN: true or false
237     # @DESCRIPTION:
238     # It returns true if .config exists in a build directory otherwise false
239     linux_config_src_exists() {
240 robbat2 1.75 export _LINUX_CONFIG_EXISTS_DONE=1
241 robbat2 1.62 [ -s "${KV_OUT_DIR}/.config" ]
242     }
243    
244     # @FUNCTION: linux_config_bin_exists
245     # @RETURN: true or false
246     # @DESCRIPTION:
247     # It returns true if .config exists in /proc, otherwise false
248     linux_config_bin_exists() {
249 robbat2 1.75 export _LINUX_CONFIG_EXISTS_DONE=1
250 robbat2 1.79 [ -s "/proc/config.gz" ]
251 robbat2 1.62 }
252    
253 dsd 1.56 # @FUNCTION: linux_config_exists
254     # @RETURN: true or false
255     # @DESCRIPTION:
256     # It returns true if .config exists otherwise false
257 robbat2 1.62 #
258     # This function MUST be checked before using any of the linux_chkconfig_*
259     # functions.
260 dsd 1.53 linux_config_exists() {
261 robbat2 1.62 linux_config_src_exists || linux_config_bin_exists
262 dsd 1.53 }
263    
264 dsd 1.56 # @FUNCTION: require_configured_kernel
265     # @DESCRIPTION:
266     # This function verifies that the current kernel is configured (it checks against the existence of .config)
267     # otherwise it dies.
268 dsd 1.53 require_configured_kernel() {
269 robbat2 1.62 if ! linux_config_src_exists; then
270 dsd 1.53 qeerror "Could not find a usable .config in the kernel source directory."
271     qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
272     qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
273     qeerror "it points to the necessary object directory so that it might find .config."
274     die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
275     fi
276     }
277    
278 dsd 1.56 # @FUNCTION: linux_chkconfig_present
279     # @USAGE: option
280     # @RETURN: true or false
281     # @DESCRIPTION:
282 loki_val 1.59 # It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
283 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
284     # MUST call linux_config_exists first.
285 johnm 1.7 linux_chkconfig_present() {
286 robbat2 1.76 linux_config_qa_check linux_chkconfig_present
287 robbat2 1.75 local RESULT
288 robbat2 1.62 local config
289     config="${KV_OUT_DIR}/.config"
290     [ ! -f "${config}" ] && config="/proc/config.gz"
291     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
292 johnm 1.1 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
293     }
294    
295 dsd 1.56 # @FUNCTION: linux_chkconfig_module
296     # @USAGE: option
297     # @RETURN: true or false
298     # @DESCRIPTION:
299     # It checks that CONFIG_<option>=m is present in the current kernel .config
300 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
301     # MUST call linux_config_exists first.
302 johnm 1.7 linux_chkconfig_module() {
303 robbat2 1.76 linux_config_qa_check linux_chkconfig_module
304 robbat2 1.75 local RESULT
305 robbat2 1.62 local config
306     config="${KV_OUT_DIR}/.config"
307     [ ! -f "${config}" ] && config="/proc/config.gz"
308     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
309 johnm 1.1 [ "${RESULT}" = "m" ] && return 0 || return 1
310     }
311    
312 dsd 1.56 # @FUNCTION: linux_chkconfig_builtin
313     # @USAGE: option
314     # @RETURN: true or false
315     # @DESCRIPTION:
316     # It checks that CONFIG_<option>=y is present in the current kernel .config
317 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
318     # MUST call linux_config_exists first.
319 johnm 1.7 linux_chkconfig_builtin() {
320 robbat2 1.76 linux_config_qa_check linux_chkconfig_builtin
321 robbat2 1.75 local RESULT
322 robbat2 1.62 local config
323     config="${KV_OUT_DIR}/.config"
324     [ ! -f "${config}" ] && config="/proc/config.gz"
325     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
326 johnm 1.1 [ "${RESULT}" = "y" ] && return 0 || return 1
327     }
328    
329 dsd 1.56 # @FUNCTION: linux_chkconfig_string
330     # @USAGE: option
331     # @RETURN: CONFIG_<option>
332     # @DESCRIPTION:
333     # It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
334 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
335     # MUST call linux_config_exists first.
336 johnm 1.7 linux_chkconfig_string() {
337 robbat2 1.76 linux_config_qa_check linux_chkconfig_string
338 robbat2 1.62 local config
339     config="${KV_OUT_DIR}/.config"
340     [ ! -f "${config}" ] && config="/proc/config.gz"
341     getfilevar_noexec "CONFIG_${1}" "${config}"
342 johnm 1.7 }
343    
344 johnm 1.1 # Versioning Functions
345     # ---------------------------------------
346    
347 dsd 1.56 # @FUNCTION: kernel_is
348     # @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
349     # @RETURN: true or false
350     # @DESCRIPTION:
351     # It returns true when the current kernel version satisfies the comparison against the passed version.
352     # -eq is the default comparison.
353 johnm 1.1 #
354 dsd 1.56 # @CODE
355 johnm 1.1 # For Example where KV = 2.6.9
356 dsd 1.56 # kernel_is 2 4 returns false
357     # kernel_is 2 returns true
358     # kernel_is 2 6 returns true
359     # kernel_is 2 6 8 returns false
360     # kernel_is 2 6 9 returns true
361     # @CODE
362    
363 johnm 1.1 # got the jist yet?
364    
365     kernel_is() {
366 dsd 1.53 # if we haven't determined the version yet, we need to.
367 robbat2 1.69 linux-info_get_any_version
368    
369 robbat2 1.80 local operator testagainst value x=0 y=0 z=0
370 johnm 1.23
371     case ${1} in
372 robbat2 1.68 -lt|lt) operator="-lt"; shift;;
373     -gt|gt) operator="-gt"; shift;;
374     -le|le) operator="-le"; shift;;
375     -ge|ge) operator="-ge"; shift;;
376     -eq|eq) operator="-eq"; shift;;
377     *) operator="-eq";;
378 johnm 1.23 esac
379    
380     for x in ${@}; do
381     for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
382     value="${value}${x}"
383     z=$((${z} + 1))
384    
385     case ${z} in
386 robbat2 1.80 1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do testagainst="${testagainst}0"; done;
387     testagainst="${testagainst}${KV_MAJOR}";;
388     2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do testagainst="${testagainst}0"; done;
389     testagainst="${testagainst}${KV_MINOR}";;
390     3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do testagainst="${testagainst}0"; done;
391     testagainst="${testagainst}${KV_PATCH}";;
392 johnm 1.23 *) die "Error in kernel-2_kernel_is(): Too many parameters.";;
393     esac
394     done
395 maekke 1.73
396 robbat2 1.80 [ "${testagainst}" ${operator} "${value}" ] && return 0 || return 1
397 johnm 1.1 }
398    
399 johnm 1.30 get_localversion() {
400     local lv_list i x
401    
402     # ignore files with ~ in it.
403     for i in $(ls ${1}/localversion* 2>/dev/null); do
404     [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
405     done
406    
407     for i in ${lv_list}; do
408     x="${x}$(<${i})"
409     done
410     x=${x/ /}
411     echo ${x}
412     }
413    
414 robbat2 1.63 # internal variable, so we know to only print the warning once
415     get_version_warning_done=
416    
417 dsd 1.56 # @FUNCTION: get_version
418     # @DESCRIPTION:
419     # It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
420     # (if KV_FULL is already set it does nothing).
421     #
422     # The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
423     #
424     # The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
425     # KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
426     # symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
427 johnm 1.1 get_version() {
428 johnm 1.4 local kbuild_output
429 swegener 1.29
430 johnm 1.1 # no need to execute this twice assuming KV_FULL is populated.
431     # we can force by unsetting KV_FULL
432 johnm 1.19 [ -n "${KV_FULL}" ] && return 0
433 johnm 1.1
434     # if we dont know KV_FULL, then we need too.
435     # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
436     unset KV_DIR
437    
438     # KV_DIR will contain the full path to the sources directory we should use
439 robbat2 1.63 [ -z "${get_version_warning_done}" ] && \
440 johnm 1.11 qeinfo "Determining the location of the kernel source code"
441 johnm 1.1 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
442     [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
443 swegener 1.29
444 johnm 1.1 if [ -z "${KV_DIR}" ]
445     then
446 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
447     get_version_warning_done=1
448     qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
449     #qeinfo "This package requires Linux sources."
450     if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
451     qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
452     qeinfo "(or the kernel you wish to build against)."
453     qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
454     else
455     qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
456     fi
457 johnm 1.7 fi
458 johnm 1.19 return 1
459 johnm 1.7 fi
460    
461 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
462     qeinfo "Found kernel source directory:"
463     qeinfo " ${KV_DIR}"
464     fi
465 johnm 1.7
466     if [ ! -s "${KV_DIR}/Makefile" ]
467     then
468 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
469     get_version_warning_done=1
470     qeerror "Could not find a Makefile in the kernel source directory."
471     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
472     fi
473 johnm 1.19 return 1
474 johnm 1.7 fi
475 swegener 1.29
476 johnm 1.4 # OK so now we know our sources directory, but they might be using
477     # KBUILD_OUTPUT, and we need this for .config and localversions-*
478     # so we better find it eh?
479     # do we pass KBUILD_OUTPUT on the CLI?
480     OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
481 swegener 1.29
482 robbat2 1.78 # keep track of it
483     KERNEL_MAKEFILE="${KV_DIR}/Makefile"
484    
485     # Check if the Makefile is valid for direct parsing.
486     # Check status results:
487     # - PASS, use 'getfilevar' to extract values
488     # - FAIL, use 'getfilevar_noexec' to extract values
489     # The check may fail if:
490     # - make is not present
491     # - corruption exists in the kernel makefile
492     local a='' b='' mkfunc='getfilevar'
493     a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
494     b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
495     [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
496    
497 johnm 1.6 # And if we didn't pass it, we can take a nosey in the Makefile
498 robbat2 1.78 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})"
499 johnm 1.4 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
500 swegener 1.29
501 johnm 1.1 # And contrary to existing functions I feel we shouldn't trust the
502     # directory name to find version information as this seems insane.
503 robbat2 1.78 # so we parse ${KERNEL_MAKEFILE}
504     KV_MAJOR="$(${mkfunc} VERSION ${KERNEL_MAKEFILE})"
505     KV_MINOR="$(${mkfunc} PATCHLEVEL ${KERNEL_MAKEFILE})"
506     KV_PATCH="$(${mkfunc} SUBLEVEL ${KERNEL_MAKEFILE})"
507     KV_EXTRA="$(${mkfunc} EXTRAVERSION ${KERNEL_MAKEFILE})"
508 swegener 1.29
509 johnm 1.7 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
510     then
511 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
512     get_version_warning_done=1
513     qeerror "Could not detect kernel version."
514     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
515     fi
516 johnm 1.19 return 1
517 johnm 1.7 fi
518 swegener 1.29
519 johnm 1.1 # and in newer versions we can also pull LOCALVERSION if it is set.
520 johnm 1.4 # but before we do this, we need to find if we use a different object directory.
521     # This *WILL* break if the user is using localversions, but we assume it was
522     # caught before this if they are.
523 robbat2 1.81 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
524 johnm 1.4
525     [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
526     [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
527     if [ -n "${KV_OUT_DIR}" ];
528     then
529 johnm 1.11 qeinfo "Found kernel object directory:"
530     qeinfo " ${KV_OUT_DIR}"
531 swegener 1.29
532 johnm 1.30 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
533 johnm 1.4 fi
534 johnm 1.41 # and if we STILL have not got it, then we better just set it to KV_DIR
535 johnm 1.4 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
536 johnm 1.21
537 dsd 1.53 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
538 robbat2 1.71 if linux_config_src_exists; then
539 dsd 1.53 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
540     KV_LOCAL="${KV_LOCAL//\"/}"
541    
542     # For things like git that can append extra stuff:
543     [ -e ${KV_DIR}/scripts/setlocalversion ] &&
544     linux_chkconfig_builtin LOCALVERSION_AUTO &&
545     KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
546 johnm 1.41 fi
547    
548 johnm 1.1 # And we should set KV_FULL to the full expanded version
549     KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
550 johnm 1.21
551 johnm 1.11 qeinfo "Found sources for kernel version:"
552     qeinfo " ${KV_FULL}"
553 johnm 1.21
554 johnm 1.19 return 0
555 johnm 1.1 }
556    
557 dsd 1.56 # @FUNCTION: get_running_version
558     # @DESCRIPTION:
559     # It gets the version of the current running kernel and the result is the same as get_version() if the
560     # function can find the sources.
561 johnm 1.23 get_running_version() {
562     KV_FULL=$(uname -r)
563 johnm 1.1
564 johnm 1.23 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
565     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
566     unset KV_FULL
567     get_version
568     return $?
569     elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
570     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
571     unset KV_FULL
572     get_version
573     return $?
574     else
575     KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
576     KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
577     KV_PATCH=$(get_version_component_range 3- ${KV_FULL})
578     KV_PATCH=${KV_PATCH//-*}
579     [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \
580     && KV_EXTRA="-${KV_FULL#*-}"
581     fi
582     return 0
583     }
584 johnm 1.1
585 robbat2 1.66 # This next function is named with the eclass prefix to avoid conflicts with
586     # some old versionator-like eclass functions.
587    
588     # @FUNCTION: linux-info_get_any_version
589     # @DESCRIPTION:
590     # This attempts to find the version of the sources, and otherwise falls back to
591     # the version of the running kernel.
592     linux-info_get_any_version() {
593 maekke 1.73 get_version
594 robbat2 1.67 if [[ $? -ne 0 ]]; then
595 robbat2 1.66 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
596 maekke 1.73 get_running_version
597 robbat2 1.66 fi
598     }
599    
600 johnm 1.1
601     # ebuild check functions
602     # ---------------------------------------
603    
604 dsd 1.56 # @FUNCTION: check_kernel_built
605     # @DESCRIPTION:
606     # This function verifies that the current kernel sources have been already prepared otherwise it dies.
607 johnm 1.1 check_kernel_built() {
608 dsd 1.53 # if we haven't determined the version yet, we need to
609 dsd 1.54 require_configured_kernel
610 dsd 1.53 get_version
611 swegener 1.29
612 johnm 1.16 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
613 johnm 1.1 then
614 johnm 1.16 eerror "These sources have not yet been prepared."
615     eerror "We cannot build against an unprepared tree."
616 johnm 1.1 eerror "To resolve this, please type the following:"
617     eerror
618     eerror "# cd ${KV_DIR}"
619     eerror "# make oldconfig"
620 johnm 1.16 eerror "# make modules_prepare"
621 johnm 1.1 eerror
622     eerror "Then please try merging this module again."
623     die "Kernel sources need compiling first"
624     fi
625     }
626    
627 dsd 1.56 # @FUNCTION: check_modules_supported
628     # @DESCRIPTION:
629     # This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
630 johnm 1.1 check_modules_supported() {
631     # if we haven't determined the version yet, we need too.
632 dsd 1.53 require_configured_kernel
633     get_version
634 swegener 1.29
635 johnm 1.7 if ! linux_chkconfig_builtin "MODULES"
636 johnm 1.1 then
637     eerror "These sources do not support loading external modules."
638     eerror "to be able to use this module please enable \"Loadable modules support\""
639     eerror "in your kernel, recompile and then try merging this module again."
640 johnm 1.7 die "No support for external modules in ${KV_FULL} config"
641 johnm 1.3 fi
642     }
643    
644 dsd 1.56 # @FUNCTION: check_extra_config
645     # @DESCRIPTION:
646     # It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
647     # the prefix ~ is not used) doesn't satisfy the directive.
648 johnm 1.3 check_extra_config() {
649 mrness 1.45 local config negate die error reworkmodulenames
650 dsd 1.53 local soft_errors_count=0 hard_errors_count=0 config_required=0
651 robbat2 1.75 # store the value of the QA check, because otherwise we won't catch usages
652     # after if check_extra_config is called AND other direct calls are done
653     # later.
654     local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
655 dsd 1.53
656 dsd 1.55 # if we haven't determined the version yet, we need to
657 robbat2 1.70 linux-info_get_any_version
658 dsd 1.55
659 dsd 1.53 # Determine if we really need a .config. The only time when we don't need
660     # one is when all of the CONFIG_CHECK options are prefixed with "~".
661     for config in ${CONFIG_CHECK}
662     do
663     if [[ "${config:0:1}" != "~" ]]; then
664     config_required=1
665     break
666     fi
667     done
668    
669     if [[ ${config_required} == 0 ]]; then
670     # In the case where we don't require a .config, we can now bail out
671     # if the user has no .config as there is nothing to do. Otherwise
672     # code later will cause a failure due to missing .config.
673 robbat2 1.79 if ! linux_config_exists; then
674 robbat2 1.60 ewarn "Unable to check for the following kernel config options due"
675 robbat2 1.64 ewarn "to absence of any configured kernel sources or compiled"
676     ewarn "config:"
677 robbat2 1.60 for config in ${CONFIG_CHECK}; do
678 robbat2 1.77 local_error="ERROR_${config#\~}"
679     msg="${!local_error}"
680     if [[ "x${msg}" == "x" ]]; then
681     local_error="WARNING_${config#\~}"
682     msg="${!local_error}"
683     fi
684     ewarn " - ${config#\~}${msg:+ - }${msg}"
685 robbat2 1.60 done
686     ewarn "You're on your own to make sure they are set if needed."
687 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
688 dsd 1.53 return 0
689     fi
690     else
691 robbat2 1.79 require_configured_kernel
692 dsd 1.53 fi
693 johnm 1.3
694 mrness 1.45 einfo "Checking for suitable kernel configuration options..."
695 maekke 1.58
696 johnm 1.3 for config in ${CONFIG_CHECK}
697     do
698 johnm 1.31 # if we specify any fatal, ensure we honor them
699     die=1
700     error=0
701     negate=0
702     reworkmodulenames=0
703    
704 dsd 1.53 if [[ ${config:0:1} == "~" ]]; then
705 mrness 1.45 die=0
706 johnm 1.31 config=${config:1}
707 dsd 1.53 elif [[ ${config:0:1} == "@" ]]; then
708 mrness 1.45 die=0
709 johnm 1.31 reworkmodulenames=1
710     config=${config:1}
711     fi
712 dsd 1.53 if [[ ${config:0:1} == "!" ]]; then
713 mrness 1.45 negate=1
714 johnm 1.44 config=${config:1}
715     fi
716 johnm 1.17
717 johnm 1.31 if [[ ${negate} == 1 ]]; then
718     linux_chkconfig_present ${config} && error=2
719     elif [[ ${reworkmodulenames} == 1 ]]; then
720 mrness 1.45 local temp_config="${config//*:}" i n
721 johnm 1.17 config="${config//:*}"
722 johnm 1.31 if linux_chkconfig_present ${config}; then
723     for i in ${MODULE_NAMES}; do
724 johnm 1.17 n="${i//${temp_config}}"
725 dsd 1.38 [[ -z ${n//\(*} ]] && \
726 johnm 1.31 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
727 johnm 1.17 done
728 johnm 1.31 error=2
729 johnm 1.17 fi
730 johnm 1.3 else
731 johnm 1.31 linux_chkconfig_present ${config} || error=1
732     fi
733    
734 mrness 1.45 if [[ ${error} > 0 ]]; then
735     local report_func="eerror" local_error
736     local_error="ERROR_${config}"
737     local_error="${!local_error}"
738    
739     if [[ -z "${local_error}" ]]; then
740     # using old, deprecated format.
741     local_error="${config}_ERROR"
742     local_error="${!local_error}"
743     fi
744     if [[ ${die} == 0 && -z "${local_error}" ]]; then
745     #soft errors can be warnings
746     local_error="WARNING_${config}"
747 johnm 1.7 local_error="${!local_error}"
748 mrness 1.45 if [[ -n "${local_error}" ]] ; then
749     report_func="ewarn"
750 johnm 1.44 fi
751 mrness 1.45 fi
752 johnm 1.44
753 mrness 1.45 if [[ -z "${local_error}" ]]; then
754     [[ ${error} == 1 ]] \
755     && local_error="is not set when it should be." \
756     || local_error="should not be set. But it is."
757     local_error="CONFIG_${config}:\t ${local_error}"
758     fi
759     if [[ ${die} == 0 ]]; then
760     ${report_func} " ${local_error}"
761     soft_errors_count=$[soft_errors_count + 1]
762     else
763     ${report_func} " ${local_error}"
764     hard_errors_count=$[hard_errors_count + 1]
765 johnm 1.3 fi
766     fi
767     done
768    
769 mrness 1.45 if [[ ${hard_errors_count} > 0 ]]; then
770 johnm 1.3 eerror "Please check to make sure these options are set correctly."
771 johnm 1.31 eerror "Failure to do so may cause unexpected problems."
772 mrness 1.45 eerror "Once you have satisfied these options, please try merging"
773     eerror "this package again."
774 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
775 mrness 1.45 die "Incorrect kernel configuration options"
776     elif [[ ${soft_errors_count} > 0 ]]; then
777     ewarn "Please check to make sure these options are set correctly."
778     ewarn "Failure to do so may cause unexpected problems."
779     else
780     eend 0
781 johnm 1.1 fi
782 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
783 johnm 1.1 }
784    
785     check_zlibinflate() {
786 dsd 1.53 # if we haven't determined the version yet, we need to
787     require_configured_kernel
788     get_version
789 swegener 1.29
790 johnm 1.1 # although I restructured this code - I really really really dont support it!
791    
792     # bug #27882 - zlib routines are only linked into the kernel
793     # if something compiled into the kernel calls them
794     #
795     # plus, for the cloop module, it appears that there's no way
796     # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
797     # is on
798 swegener 1.29
799     local INFLATE
800     local DEFLATE
801 johnm 1.1
802     einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
803 swegener 1.29
804 johnm 1.1 ebegin "checking ZLIB_INFLATE"
805 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
806 johnm 1.1 eend $?
807     [ "$?" != 0 ] && die
808 swegener 1.29
809 johnm 1.1 ebegin "checking ZLIB_DEFLATE"
810 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
811 johnm 1.1 eend $?
812     [ "$?" != 0 ] && die
813 swegener 1.29
814 johnm 1.1 local LINENO_START
815     local LINENO_END
816     local SYMBOLS
817     local x
818 swegener 1.29
819 johnm 1.1 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
820     LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
821     (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
822     (( LINENO_END = $LINENO_END - 1 ))
823 johnm 1.4 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
824 johnm 1.1
825     # okay, now we have a list of symbols
826     # we need to check each one in turn, to see whether it is set or not
827     for x in $SYMBOLS ; do
828     if [ "${!x}" = "y" ]; then
829     # we have a winner!
830     einfo "${x} ensures zlib is linked into your kernel - excellent"
831     return 0
832     fi
833     done
834 swegener 1.29
835 johnm 1.1 eerror
836     eerror "This kernel module requires ZLIB library support."
837     eerror "You have enabled zlib support in your kernel, but haven't enabled"
838     eerror "enabled any option that will ensure that zlib is linked into your"
839     eerror "kernel."
840     eerror
841     eerror "Please ensure that you enable at least one of these options:"
842     eerror
843    
844     for x in $SYMBOLS ; do
845     eerror " * $x"
846     done
847    
848     eerror
849     eerror "Please remember to recompile and install your kernel, and reboot"
850     eerror "into your new kernel before attempting to load this kernel module."
851    
852     die "Kernel doesn't include zlib support"
853     }
854 johnm 1.8
855     ################################
856     # Default pkg_setup
857     # Also used when inheriting linux-mod to force a get_version call
858 dsd 1.56 # @FUNCTION: linux-info_pkg_setup
859     # @DESCRIPTION:
860     # Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
861     # to support the options specified in CONFIG_CHECK (if not null)
862 johnm 1.8 linux-info_pkg_setup() {
863 robbat2 1.66 linux-info_get_any_version
864 phreak 1.48
865     if kernel_is 2 4; then
866     if [ "$( gcc-major-version )" -eq "4" ] ; then
867     echo
868     ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
869     ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
870     echo
871     ewarn "Either switch to another gcc-version (via gcc-config) or use a"
872     ewarn "newer kernel that supports gcc-4."
873     echo
874     ewarn "Also be aware that bugreports about gcc-4 not working"
875     ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
876     echo
877     epause 10
878     fi
879     fi
880    
881 johnm 1.10 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
882 johnm 1.8 }

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